Its To Thin To Decorate With! Cream Cheese Icing Ideas!

Im making a red velvet cake and tried a recipe i found for cream cheese frosting but its to thin!!it called for 12oz cream cheese1- 1 1/2 pounds podered sugar2-3 tbs of whipping cream1 tsp of vanilla extract1 1/2 cups of softened butter!

can i just add more confectioners sugar to it to thicken it up? or will that make it to sweet?